Mike,
This is a good observation. Nowhere in Paul's epistles or the general epistles except Ja. 5: 2 does it refer to clothing pertaining to salvation and righteousness.
This is obviously an old Testament faith and works salvation AND Jewish/ Tribulation salvation by faith and perseverance attribute which would make Revelation non-applicable to the present church. Note the context of the verses and that most are all Prophetic and post-Rapture/ future.

Raiment, garments, Robes, White, et. all pertaining to:

Is. 61:10

10 I will greatly rejoice in the LORD, my soul shall be joyful in my God; for he hath clothed me with the garments of salvation, he hath covered me with the robe of righteousness, as a bridegroom decketh himself with ornaments, and as a bride adorneth herself with her jewels.

Is. 22: 21

21 And I will clothe him with thy robe, and strengthen him with thy girdle, and I will commit thy government into his hand: and he shall be a father to the inhabitants of Jerusalem, and to the house of Judah.

 Is.1:18
18 Come now, and let us reason together, saith the LORD: though your sins be as scarlet, they shall be as white as snow; though they be red like crimson, they shall be as wool.

Mt.22 : 11-13


11 And when the king came in to see the guests, he saw there a man which had not on a wedding garment:

12 And he saith unto him, Friend, how camest thou in hither not having a wedding garment? And he was speechless.

13 Then said the king to the servants, Bind him hand and foot, and take him away, and cast him into outer darkness; there shall be weeping and gnashing of teeth.


Ez. 44: 17

17 And it shall come to pass, that when they enter in at the gates of the inner court, they shall be clothed with linen garments; and no wool shall come upon them, whiles they minister in the gates of the inner court, and within.


Ecc. 9 : 8


8 Let thy garments be always white; and let thy head lack no ointment.


Es. 8 : 15


15 And Mordecai went out from the presence of the king in royal apparel of blue and white, and with a great crown of gold, and with a garment of fine linen and purple: and the city of Shushan rejoiced and was glad.

Zec. 3: 4
4 And he answered and spake unto those that stood before him, saying, Take away the filthy garments from him. And unto him he said, Behold, I have caused thine iniquity to pass from thee, and I will clothe thee with change of raiment.

Ja.5: 2
2 Your riches are corrupted, and your garments are motheaten.

Rev. 3: 4-5

4 Thou hast a few names even in Sardis which have not defiled their garments; and they shall walk with me in white: for they are worthy.

5 He that overcometh, the same shall be clothed in white raiment; and I will not blot out his name out of the book of life, but I will confess his name before my Father, and before his angels.


Rev. 3: 18

18 I counsel thee to buy of me gold tried in the fire, that thou mayest be rich; and white raiment, that thou mayest be clothed, and thatthe shame of thy nakedness do not appear; and anoint thine eyes with eyesalve, that thou mayest see.